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Acta Medica Colombiana

versión impresa ISSN 0120-2448

Resumen

ARRUNATEGUI, Ana María et al. Allele, genotype and haplotype frequencies of HLA system class I and II in donors in a population in southwestern Colombia. Acta Med Colomb [online]. 2013, vol.38, n.1, pp.16-21. ISSN 0120-2448.

Introduction: the determination of the alleles expressed more often in a population allows to know the probability of a person to find a matched unrelated donor in that population and serves as reference for the HLA association studies with different diseases and applications in anthropogenetic studies. Objective: to determine the allelic frequencies HLA-A*, B* and DRB1* in the Colombia southwestern population. Design: retrospective descriptive study. Methods: in this study we included 1230 donors (living and deceased) evaluated witin our renal transplantation or bone marrow transplant protocol following at the Fundación Valle del Lili in Cali, Colombia. The typing was made by molecular methods and the statistical analysis of allele, genotype and haplotype frequencies was performed with the genetic programs GENEPOP and Arlequin. Results: we identified 20, 29 and 13 alleles for the HLA-A*, HLA-B* and HLA-DRB1* locus respectively and the most frequent alleles were A* 02 (25%), B* 35 (17.7% ) and DRB1* 04 (23%). The haplotypes for the two more frequent loci were A* 24B* 35 (8.9%), B* 35DRB* 04 (8.1%) and A* 24DRB* 04 (10.9%) and for three loci A* 24B * 35DRB1* 04 (5.4%) and A* 24B* 40DRB1* 04 (3.2%). Conclusion: the alleles expressed more frequently in the Colombia southwestern population are represented by the most common alleles in the colombian population. (Acta Med Colomb 2013; 38: 16-21).

Palabras clave : HLA; genotype.

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